What should be included when sending a sample collected in a yellow top (ACD) tube?

When sending a sample collected in a yellow top (ACD) tube, it is essential to consider the characteristics of the tube and what it is designed for. Yellow top tubes containing ACD (Acid Citrate Dextrose) are primarily used for the collection of blood samples intended for tests that require viable cells, particularly for genetic studies, tissue typing, or serological assays.

A complete blood count (CBC) is relevant in this context because it is a fundamental hematological test that evaluates various components of blood, including red blood cells, white blood cells, and platelets. The ACD formulation does not interfere with most hematological analyses, making it suitable for such tests.

In contrast, urine samples and microbiology reports do not pertain specifically to the use of ACD tubes. Urine samples are collected differently and usually require specific urine collection containers. Microbiology reports pertain to microbiological cultures and sensitivities, which are usually performed on samples collected in sterile containers designed for that purpose. As for a second peripheral blood smear, while it may be useful for examining blood morphology, it does not relate directly to the purpose of ACD tubes.

In summary, the inclusion of a patient's complete blood count aligns perfectly with the capabilities of